The missed warnings that might have prevented attacks

Police were warned that one of the 'Charlie Hebdo' gunmen had turned up three months before the attack to say it would be targeted, it has been reported, as French film stars leant their weight to the satirical magazine's anniversary.

Police were warned that one of the 'Charlie Hebdo' gunmen had turned up three months before the attack to say it would be targeted, it has been reported, as French film stars leant their weight to the satirical magazine's anniversary.

The magazine's release came as fresh details emerged of alleged security failings in the run-up to the attacks, which have prompted the widows of two victims to file criminal complaints.

'Le Canard Enchaîné', the satirical weekly, said three months earlier, a journalist working next to the 'Charlie' offices had phoned one of two policemen tasked with protecting its editor to warn him he had just seen a man in a car outside talking to himself, saying: "That will teach them to criticise the Prophet."

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